Net Income (Loss) Per Share of Common Stock (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Schedule of Computation of Basic and Diluted Net Income (Loss) Per Share of Common Stock

The following tables set forth the computation of basic and diluted net income (loss) per share of common stock (in thousands, except per share data):

	Three Months Ended March 31,
	2019
	Class A
BASIC AND DILUTED:
Net income (loss) attributable to common stockholders	$	(128,828	)
Weighted-average common shares outstanding		926,230
Net income (loss) per share attributable to common stockholders	$	(0.14	)

	Three Months Ended March 31,
	2018
	Class		Class		Class
	A		B		C
BASIC:
Net income (loss) attributable to common    stockholders – basic	$	5,047	$	430	$	132
Weighted-average common shares    outstanding – basic		782,370		66,740		20,517
Net income (loss) per share attributable to    common stockholders – basic	$	0.01	$	0.01	$	0.01
DILUTED:
Net income (loss) attributable to common    stockholders – basic	$	5,047	$	430	$	132
Reallocation of net income (loss) as a result of    conversion of Class C shares to Class A shares		132		—		—
Reallocation of net income (loss) as a result of    conversion of Class B shares to Class A shares		430		—		—
Reallocation of net income (loss) to Class B and    Class C shares		—		41		(3	)
Net income (loss) attributable to common    stockholders – diluted	$	5,609	$	471	$	129
Weighted-average common shares    outstanding – basic		782,370		66,740		20,517
Conversion of Class C to Class A common    shares outstanding		20,517		—		—
Conversion of Class B to Class A common    shares outstanding		66,740		—		—
Weighted-average effect of dilutive securities:
Stock options and employee stock purchase    plan		10,166		8,296		—
ZSUs		12,605		—		—
Performance-based ZSUs		1,376		—		—
Weighted-average common shares    outstanding – diluted		893,774		75,036		20,517
Net income (loss) per share attributable to    common stockholders – diluted	$	0.01	$	0.01	$	0.01

Shares excluded from Computation of Diluted Net Income (Loss) per Share

The following weighted-average equity awards were excluded from the computation of diluted net income (loss) per share because their effect would have been anti-dilutive for the periods presented (in thousands):

	Three Months Ended March 31,
	2019		2018
Stock options and employee stock purchase plan		36,713		7,374
ZSUs		50,298		3,042
Total		87,011		10,416